Detecting Neighbor Cell System Information by Low Complexity User Equipment

1. A method performed by a network node comprising: determining, by the network node, a transmitter configuration of a target network node of a target cell; determining, by the network node, a receiver configuration of a first wireless device; determining, by the network node, based on one or more of the determined transmitter configuration of the target network node and the determined receiver configuration of the first wireless device, whether the wireless device will be able to acquire system information of the target cell; and performing one of: communicating, by the network node, a request to the first wireless device to acquire the system information of the target cell if: the determined receiver configuration of the first wireless device indicates that the first wireless device comprises at least two antennas for acquiring system information of the target cell; or the determined transmitter configuration of the target network node indicates that the target network node comprises at least two antennas for transmitting system information of the target cell; and refraining from communicating the request to the first wireless device to acquire the system information of the target cell if: the determined receiver configuration of the first wireless device indicates that the first wireless device comprises less than two antennas for acquiring system information of the target cell; and the determined transmitter configuration of the target network node indicates that the target network node comprises less than two antennas for transmitting system information of the target cell.

2. The method of claim 1 , further comprising, receiving, from the first wireless device, the system information of the target cell.

3. The method of claim 2 , further comprising performing a handover to the target network node for the first wireless device based on the received system information.

4. The method of claim 2 , further comprising establishing an automatic neighbor relation between the network node and the target network node based on the received system information.

5. The method of claim 1 , further comprising: determining the receiver configuration of the first wireless device indicates that the first wireless device comprises less than two antennas for acquiring system information of the target cell and determining the transmitter configuration of the target network node indicates that the target network node comprises less than two antennas for transmitting system information of the target cell; determining a receiver configuration associated with a second wireless device; and communicating a request to the second wireless device to acquire the system information of the target cell if the receiver configuration of the second wireless device indicates that the second wireless device comprises at least two antennas for acquiring system information of the target cell.

6. The method of claim 1 , wherein the request to acquire system information of the target cell comprises a physical cell identifier of the target cell.

7. The method of claim 1 , wherein the system information of the target cell comprises one or more of: a cell global identifier (CGI) of the target cell; a system frame number (SFN) of the target cell; a master information block (MIB) of the target cell; and a system information block (SIB) of the target cell.

8. A method performed by a wireless device comprising: receiving, by the wireless device, a request from a network node to acquire system information of a first target cell from a first target network node; determining, by the wireless device, a transmitter configuration of the first target network node; determining, by the wireless device, a receiver configuration of the wireless device; determining, by the wireless device, based on one or more of the determined transmitter configuration of the first target network node and the determined receiver configuration of the wireless device, whether the wireless device will be able to acquire system information of the first target cell; and performing one of: acquiring, by the wireless device, the system information of the first target cell if: the determined receiver configuration of the wireless device indicates that the wireless device comprises at least two antennas for acquiring system information of the first target cell; or the determined transmitter configuration of the first target network node indicates that the first target network node comprises at least two antennas for transmitting system information of the first target cell; and refraining from acquiring the system information of the first target cell if: the determined receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell; and the determined transmitter configuration of the first target network node indicates that the first target network node comprises less than two antennas for transmitting system information of the first target cell.

9. The method of claim 8 , further comprising communicating the acquired system information to the network node.

10. The method of claim 8 , further comprising: determining the receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell and determining the transmitter configuration of the first target network node indicates that the first target network node comprises less than two antennas for transmitting system information of the first target cell; and communicating an indication to the network node that the wireless device cannot acquire the system information of the first target cell.

11. The method of claim 8 , further comprising: determining the receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell and determining the transmitter configuration of the first target network node indicates that the first target network node comprises less than two antennas for transmitting system information of the first target cell; and communicating an indication to the network node that the wireless device can acquire the system information of a second target cell, the second target cell including a second target network node comprising at least two antennas for transmitting system information of the second target cell.

12. The method of claim 8 , wherein the request from the network node to acquire system information of the first target cell comprises a physical cell identifier of the first target cell.

13. The method of claim 8 , wherein the system information of the target cell comprises one or more of: a cell global identifier (CGI) of the target cell; a system frame number (SFN) of the target cell; a master information block (MIB) of the target cell; and a system information block (SIB) of the target cell.

14. A network node comprising: a memory; a network interface; a transceiver; and one or more processors coupled to the memory, the network interface, and the transceiver, the one or more processors of the network node configured to: determine a transmitter configuration of a target network node of a target cell; determine a receiver configuration of a first wireless device; determine, based on one or more of the determined transmitter configuration of the target network node and the determined receiver configuration of the first wireless device, whether the wireless device will be able to acquire system information of the target cell; communicate a request to the first wireless device to acquire system information of the target cell if: the determined receiver configuration of the first wireless device indicates that the first wireless device comprises at least two antennas for acquiring system information of the target cell; or the determined transmitter configuration of the target network node indicates that the target network node comprises at least two antennas for transmitting system information of the target cell; and refrain from communicating the request to the first wireless device to acquire the system information of the target cell if: the determined receiver configuration of the first wireless device indicates that the first wireless device comprises less than two antennas for acquiring system information of the target cell; and the determined transmitter configuration of the target network node indicates that the target network node comprises less than two antennas for transmitting system information of the target cell.

15. The network node of claim 14 , the one or more processors further operable to receive, from the first wireless device, the system information of the target cell.

16. The network node of claim 12 , the one or more processors further operable to perform a handover to the target network node for the first wireless device based on the received system information.

17. The network node of claim 12 , the one or more processors further operable to establish an automatic neighbor relation between the network node and the target network node based on the received system information.

18. The network node of claim 14 , the one or more processors further operable to: determine the receiver configuration of the first wireless device indicates that the first wireless device comprises less than two antennas for acquiring system information of the target cell and the transmitter configuration of the target network node indicates that the target network node comprises less than two antennas for transmitting system information of the target cell; determine a receiver configuration of a second wireless device; and communicate a request to the second wireless device to acquire the system information of the target cell if the receiver configuration of the second wireless device indicates that the second wireless device comprises at least two antennas for acquiring system information of the target cell.

19. The network node of claim 14 , wherein the request to acquire system information of the target cell comprises a physical cell identifier of the target cell.

20. The network node of claim 14 , wherein the system information of the target cell comprises one or more of: a cell global identifier (CGI) of the target cell; a system frame number (SFN) of the target cell; a master information block (MIB) of the target cell; and a system information block (SIB) of the target cell.

21. A wireless device comprising: a memory; a transceiver; and one or more processors coupled to the memory and the transceiver, the one or more processors of the wireless device configured to: receive a request from a network node to acquire system information of a first target cell from a first target network node; determine a transmitter configuration of the first target network node; determine a receiver configuration of the wireless device; determine, by the wireless device, based on one or more of the determined transmitter configuration of the first target network node and the determined receiver configuration of the wireless device, whether the wireless device will be able to acquire system information of the first target cell; acquire the system information of the first target cell if: the determined receiver configuration of the wireless device indicates that the wireless device comprises at least two antennas for acquiring system information of the first target cell; or the determined transmitter configuration of the first target network node indicates that the first target network node comprises at least two antennas for transmitting system information of the first target cell; and refrain from acquiring the system information of the first target cell if: the determined receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell; and the determined transmitter configuration of the first target network node indicates that the first target network node comprises less than two antennas for transmitting system information of the first target cell.

22. The wireless device of claim 21 , the one or more processors operable to communicate the acquired system information to the network node.

23. The wireless device of claim 21 , the one or more processors operable to: determine the receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell and the transmitter configuration of the first target network node indicates that the target network node comprises less than two antennas for transmitting system information of the first target cell; and communicate an indication to the network node that the wireless device cannot acquire the system information of the first target cell.

24. The wireless device of claim 21 , the one or more processors operable to: determine the receiver configuration of the wireless device indicates that the wireless device comprises less than two antennas for acquiring system information of the first target cell and determine that the transmitter configuration of the first target network node indicates that the target network node comprises less than two antennas for transmitting system information of the first target cell; and communicate an indication to the network node that the wireless device can acquire the system information of a second target cell, the second target cell including a second target network node comprising at least two antennas for transmitting system information of the second target cell.

25. The wireless device of claim 21 , wherein the request from the network node to acquire system information of the first target cell comprises a physical cell identifier of the first target cell.

26. The wireless device of claim 21 , wherein the one or more processors are operable to acquire the system information of the target cell by creating autonomous gaps.